John 18:26
One of the head priest's slaves, who was a relative of the man whose ear Peter had cut off, said, "Did I not see you in the orchard with him?"
John 18:1
After Jesus had said these things He went out with His disciples across the Kidron valley. [Note: This was a "wadi," or dry creek bed which carried a torrent of water during the rainy season. It ran parallel with the east wall of Jerusalem, between the city and the Mount of Olives]. There was an [olive] orchard there and Jesus and His disciples went into it.
John 18:10
So, Simon Peter, who had a sword, drew it out and struck the head priest's slave, cutting off his right ear. Now the slave's name was Malchus.
Matthew 26:73
And a little later, those standing nearby came to Peter and said, "[We know] for sure, you also are one of them [i.e., Jesus' disciples], because your accent gives you away."
Mark 14:70-71
But again he denied it. Then after a little while those standing nearby said to Peter again, "We know for sure that you are one of them because you are from Galilee." [Note: Peter's accent gave him away. See Matt. 26:73].
Luke 22:59-60
And about an hour later someone else stated emphatically, "I know for sure that this man was also with him [i.e., Jesus], for he is from Galilee [too]." [Note: Peter's accent gave him away. See Matt. 26:73].